How Many Words Do You Need? CEFR Levels A1–C2 and Vocabulary Size
What A1, A2, B1, B2, C1 and C2 actually mean for vocabulary, roughly how many words each level takes, and why the first 2,000 words matter far more than the rest.
Every language course, exam and app now labels itself with letters and numbers: A1, B2, C1. The scale comes from the Common European Framework of Reference for Languages (CEFR), published by the Council of Europe in 2001. It describes what a learner can do at six levels, from A1 (can introduce themselves, ask simple questions) to C2 (can understand practically everything and express themselves precisely).
What the CEFR deliberately does not do is say how many words each level requires. That number has been estimated by researchers, and the estimates are worth knowing, because they tell you where to spend your time.
The six levels in one table
| Level | Label | What you can do | Approx. vocabulary (estimates) |
|---|---|---|---|
| A1 | Breakthrough | Basic phrases, introduce yourself, simple questions | 500–1,000 words |
| A2 | Waystage | Routine tasks, simple exchanges about familiar topics | 1,000–2,000 |
| B1 | Threshold | Handle travel, describe experiences, follow clear speech | 2,000–3,000 |
| B2 | Vantage | Understand complex texts, talk fluently with native speakers | 3,000–4,500 |
| C1 | Advanced | Read demanding texts, use language flexibly for work and study | 4,500–8,000 |
| C2 | Mastery | Understand virtually everything, express fine shades of meaning | 8,000+ |
Why a range and not a number? Because studies count different things. James Milton's work on European learners of English (2009), using tests built on the 5,000 most frequent words, put A1 learners below about 1,500 words and C2 learners near the top of that 5,000-word range. Popular rules of thumb that go up to 16,000 words for C2 are counting a much larger dictionary, including rare words that even native speakers only recognise passively. Both are "right" for what they measure. The practical picture is the same: the early levels need far fewer words than people fear, and the gap between levels grows as you go up.
Why the first 2,000 words are the whole game at first
Words are not equally useful. Paul Nation's frequency research (2001, 2006) shows that the 2,000 most frequent word families cover roughly 80% of the running words in ordinary English texts. Reaching about 98% coverage of written text, the level where you can read comfortably without a dictionary, takes around 8,000–9,000 word families; for everyday spoken language, around 6,000–7,000.
The consequence is simple. Learning your first 2,000 words takes you from understanding nothing to understanding most of what you hear and read. Learning your next 2,000 raises coverage by only a few percentage points. That is why A1 and A2 feel like fast progress and why B2 to C1 feels slow: it is slower, per word.
What this means for how you study
- Learn words in frequency order. A word you meet every day is worth a hundred you meet once a year. Any list labelled A1 or A2 is, in practice, a frequency list.
- Start with concrete words. Nouns and verbs for things you can see (house, water, man, city, head) are the easiest to attach to a picture and the hardest to forget. Abstract vocabulary comes naturally later, once you can read.
- Treat levels as a path, not a wall. You do not "reach" B1 on a particular day. Vocabulary grows continuously; the letters just mark the terrain.
- Measure recognition and production separately. Knowing a word when you see it (passive) comes long before being able to use it (active). Both matter; passive vocabulary is typically two to three times larger.
How VisualMem uses the CEFR
Every word in VisualMem carries a CEFR level, and the order in which words are published follows that level. The A1 words come first, then A2, and so on, so the pictures you see in the first weeks are the words you will actually need in the first weeks.
For each level there is also a longer video, "50 Words in 10 Minutes", which cycles through fifty words of that level with all four images and the pronunciation. It is designed to be watched more than once: the first time to meet the words, later times to test yourself before the word appears. You can find the A1 series on every channel: American English, Spanish, German, French, Italian, Portuguese, Turkish, Japanese, Korean, Russian and British English.
Takeaway
You need far fewer words than you think to start understanding a language, and far more than you think to finish. The scale rewards the same strategy at every level: learn the most frequent words first, attach each one to something you can see and hear, and keep going.
References
- Council of Europe (2001). Common European Framework of Reference for Languages: Learning, teaching, assessment. Cambridge University Press.
- Milton, J. (2009). Measuring Second Language Vocabulary Acquisition. Multilingual Matters.
- Nation, I. S. P. (2001). Learning Vocabulary in Another Language. Cambridge University Press.
- Nation, I. S. P. (2006). How large a vocabulary is needed for reading and listening? Canadian Modern Language Review, 63(1), 59–82.